74% of mishandled bags are delayed — they arrived late but were eventually returned to their owners. [1] Another 18% were damaged or pilfered. Only 8% were classified as lost or stolen. [1] Most bags show up within 48 hours. That doesn’t make the first night without your stuff any less annoying.
That distinction matters because delayed bags and lost bags trigger different rights, different timelines, and different compensation processes.
Delayed vs. Lost: Why the Difference Matters
A delayed bag is one that’s been separated from you but is still in the airline’s system or at another airport. A lost bag is one the airline has given up looking for.
Airlines don’t declare a bag lost immediately. They search for 5 to 14 days on domestic flights (varies by carrier) before changing the status. [5] Under the Montreal Convention, a bag on an international flight isn’t legally lost until 21 days after it should have arrived. [3]
During a delay, you have the right to expense reimbursement for essentials. Once a bag is declared lost, you shift to a full compensation claim for the bag and its contents — up to $4,700 on domestic flights or approximately $2,025 on international flights. [2] [3]
What to Do Immediately
File a report before you leave the airport
Go to the airline’s Baggage Service Desk and file a Property Irregularity Report (PIR). This creates a record in WorldTracer, the global baggage tracing system used by over 500 airlines at roughly 2,800 airports worldwide. [1]
Bring your boarding pass, baggage claim tag, and a description of your bag (color, brand, size, distinguishing features). The reference number you receive is your tracking key for everything that follows.
Some airlines impose tight reporting windows. American Airlines requires a report within 4 hours of arrival on domestic flights. File at the desk before you head to your hotel.
Ask about interim expenses
Airlines are required to cover reasonable essentials while your bag is delayed. The DOT’s guidance uses a “reasonable” standard — there’s no fixed federal dollar amount. [5] Qualifying purchases include toiletries, underwear, a change of clothes, and medications.
Ask the agent at the Baggage Service Desk about the airline’s interim expense process. Some airlines offer a cash advance or voucher on the spot. Others reimburse after the fact with receipts. Either way, hang onto your receipts from day one.
For a detailed breakdown of what qualifies and per-airline policies, see our essentials reimbursement guide.
Set up tracking and check regularly
Use your PIR reference number to track your bag’s status online through the airline’s website or app. Most major airlines update this portal as your bag is located and routed.
If you placed a Bluetooth or GPS tracker in your bag, check its location now. Airlines including United and American Airlines accept AirTag location data to help locate delayed bags.
Check for updates at least every 12 hours during the first 48 hours. Based on SITA data, 66% of mishandled bags are resolved within 48 hours. [1] If yours isn’t, call the airline’s baggage service line directly.
Expense Reimbursement During a Delay
You shouldn’t have to pay out of pocket because the airline delayed your property. While your bag is missing, you can claim reimbursement for essentials — and the airline isn’t required to tell you this proactively.
The DOT’s guidance directs airlines to reimburse “reasonable” incidental expenses. [5] There’s no federally mandated daily cap. Individual airlines set their own internal limits:
- Delta: $50 per day for the first 5 days
- American Airlines: “Reasonable and necessary items” with receipts, no published daily limit
- United: “Reasonable” expenses evaluated case-by-case, with a 45-day submission deadline
Save every receipt — no receipt means no reimbursement. The threshold is what a reasonable person would spend given the circumstances — not luxury items, not designer clothing, not items unrelated to the delay.
For the full guide on what qualifies, what doesn’t, and how to submit your claim, see our essentials reimbursement guide.
Bag Fee Refund: The 12/15/30-Hour Rule
Under 14 CFR Part 260 (effective October 28, 2024), airlines must automatically refund your checked bag fee if your bag is significantly delayed: [4]
| Itinerary Type | Delay Threshold |
|---|---|
| Domestic | 12 hours |
| International (short-haul, non-stop segment 12 hours or less) | 15 hours |
| International (long-haul, non-stop segment over 12 hours) | 30 hours |
The clock starts when you’re given the opportunity to deplane at your destination and stops when the bag is delivered to you or made available for pickup. [4]
This refund is separate from any reimbursement for interim expenses or compensation for lost contents. It’s specifically the fee you paid to check the bag.
When Delayed Becomes Lost
Most airlines actively search for your bag for 5 to 14 days before declaring it officially lost. The exact window depends on the carrier — ask when you file your report.
On international flights, the Montreal Convention provides a firmer benchmark: a bag that hasn’t arrived after 21 days from the date it should have arrived is legally considered lost under Article 17(3). [3]
Once the airline declares your bag lost, the process shifts from delay reimbursement to full compensation:
- Domestic flights: Up to $4,700 per passenger under 14 CFR Part 254. [2] You must prove actual damages with an itemized list and documentation. Airlines apply depreciation.
- International flights: Up to approximately $2,025 (1,519 SDR) per passenger under the Montreal Convention. [3]
If your bag crosses the threshold from delayed to lost, you’ll need to file a formal written claim. Our how to file a claim guide walks through the full process, and our free claim letter template gives you a ready-to-use document.
Why Bags Get Delayed
Understanding the causes can help you reduce your risk on future trips. The leading reason for mishandled bags in 2024: [6]
- Transfer/connections: 41% of all mishandled bags are lost during transfers between flights
- Tagging and ticketing errors: 17%
- Loading failures: 16% — bags loaded onto the wrong aircraft or left on the ramp
- Operational issues: 10% — weather, mechanical problems, belt jams
Short connection times at major hubs are the single biggest risk factor. If your layover is under 60 minutes, your bag is significantly more likely to miss the connecting flight — even if you don’t.
Frequently Asked Questions
- What percentage of mishandled bags are delayed vs. lost?
- 74% of mishandled bags are delayed and eventually returned. Only 8% are classified as lost or stolen. The remaining 18% are damaged or pilfered.
- How long before a delayed bag is declared officially lost?
- Airlines search for 5 to 14 days on domestic flights before declaring a bag lost. Under the Montreal Convention, a bag on an international flight is legally lost after 21 days.
- What is the most common reason bags get delayed?
- Transfer and connection issues cause 41% of all mishandled bags. Short connection times under 60 minutes at major hubs are the single biggest risk factor.
- Am I entitled to a bag fee refund if my luggage is delayed?
- Yes. Airlines must refund your checked bag fee if the delay exceeds 12 hours on domestic flights, 15 hours on short-haul international, or 30 hours on long-haul international flights.
- What expenses can I claim while waiting for a delayed bag?
- Airlines must reimburse reasonable essentials including toiletries, underwear, and a change of clothes. Delta offers $50 per day for 5 days; American Airlines and United evaluate claims case by case with no published daily limit.
Sources
SITA Baggage IT Insights 2025 (covering 2024 data) -- mishandling breakdown and resolution statistics
sita.aero/resources/surveys-reports/sita-baggage-it-insights-202514 CFR Part 254 -- Domestic Baggage Liability (effective January 22, 2025)
law.cornell.edu/cfr/text/14/part-254Montreal Convention (MC99) -- Baggage Liability Provisions, Articles 17, 22, 31, 35
legislation.gov.uk/uksi/2002/263/schedule/1/made14 CFR Part 260 -- Refunds for Significantly Delayed or Lost Bags (effective October 28, 2024)
law.cornell.edu/cfr/text/14/part-260DOT Fly Rights -- Consumer Guide to Air Travel
transportation.gov/airconsumer/fly-rightsAirline baggage handling process and mishandling cause breakdown
sita.aero/pressroom/news-releases/more-air-passengers-than-ever-with-one-of-the-lowest-rates-of-mishandled-baggage-thanks-to-tech-investments